Grill-work



(No Model.)

W; H. WINSLOW. GRILL WORK.

No.-4'71,161. Patented Mar. 22, 1892. V

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UNITED STATES PATENT FFicE.

WILLIAM H. I/VINSLOWV, OF CHICAGO, ILLINOIS.

GRI LL-WORK.

v SPECIFICATION forming part of Letters Patent No. 471,161, dated March22, 1892.

I Application filed June 10, 1891. Serial No. 395,812. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM H. WINsLow, of Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Grill-Work; and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

This invention relates to that class of metallic fabric employed aroundthe shafts of elevators as a guard and known as grill-work, althoughfrequently employed for other purposesas, for example, in desk andofficefixtures, light iron fencing, elevator-cars, and the like.

The invention relates to that class of grillwork wherein aplurality oflongitudinal rods, wires, or bars are crossed by a plurality oftransversely-arranged rods, wires, or bars, so as to form sections ofvarious sizes and shapes. In some classes of workithas been customary tosecure all or a portion of these rods at their points of intersection bymeans of bolts or rivets. This method of uniting the crossing rods isexpensive and does not give the work a finished appearance. In othercases it has been found convenient to simply indent or bend one or bothof the crossing rods or wires at the points of intersection, thusforming shoulders on one or both of the bars, which tend to preventdisplacement of the one with respect to the other. The said shoulders,however, do not have this effect in practice, for obviously unless thesaid bars are secured at all the points of intersection the movement ofone rod or bar upon the other is only thereby restrained in onedirection and there is no restraint upon any movement of one of the rodsin the other direction or bodily in a direction at right angles with thegeneral plane of the entire grill-work.

The object of the present invention is to avoid these difficulties by sointerlocking one of the rods or bars with the other as to preventmovement of either rod with respect to the other either longitudinally,transversely, or bodily, while at the same time avoiding the use ofrivets or other locking devices at the points of intersection, and tothus present a neat, simple, cheap, and durable structure.

In carrying out this invention various methods may be employed; but Ihave only seen fit to illustrate three of the same, as many other formsembodying the invention will obviously occur to the mind of the skilledmechanic.

In the drawings I have illustrated in Figure l a plan View of a portionof a structure embodying my invention,wherein the bars which form themeshes of the grill-work are shown substantially at right angles witheach other, so as to form squares. It is obvious that the rods or barsmay cross each other in other directions or positions than as hereinshown, and thus form meshes or sections of irregular shapes. In Figs. 2and 3 I have shown in enlarged views the particular kind of interlockingconnection shown in Fig. 1, Fig. 2 illustrating the use of a rod andFig. 3 illustrating the use of a bar. Fig. 4 isa sectional view on theline 4: 4.- of Fig. 2. Fig. 5isasectional View on the line 5 5 of Fig.3. Fig. 6 is an enlarged view of a modified form of interlockingconnection.

In the drawings, let A represent the longitudinal rods, of which I haveshown but three, although any desired number may be employed. These rodsare bended at suitable intervals to form recesses on opposite sides ofthe rod, as shown at a a.

B B are transverse rods, which are to be so curled, wrapped, or bendedin any desired shape or kind of bend or loop upon and around the rods orbars A at the points of intersection as to lie snugly within the curvesor bends a a and be firmly secured to said bars thereby. In thisinstance the bar B is first bended outward at b to fit into the recessor bend a and is then carried over the bar A to recess a. A second bendb in the bar B is then made and is passed into the position illustratedbetween the bond 17 and the part a of the rod A, which latter isintermediate of 'the recesses a ct. A third bend b is then made in thebar B to form a recess, in which the bended part b rests. It will beobserved that the bends a a b are so made as to leave the portions 1) bof the bar B in the same plane with the unbended portions of the bars Aand B, as clearly shown in Figs. 4. and 5. It will also be noted thatwhen the form of twisting or curling of the rod B around the rod A thatis illustrated in Figs. 2 and 3 is employed neither rod can have alongitudinal movement with respect to the other, nor a transversemovement with respect to the other, nor yet a bodily movement away fromthe other. In making this form of connection I may use either round,square, or flat rods or bars, as shown, and I prefer in practice to bendor loop the rods B about the rods A when both are cold;butthisis notmaterial.

In the modified construction illustrated in Fig. 6 it will be noted thatthe rod Amay be either straight and unbended or bended, as desired. Itis shown in the drawings as straight. The looking or looping bar or rodB is tied in and around the rod A and a loop or bendin the rod 13 toform a familiarform of knot, and thus prevent movement of one rod withrespect to the other. Various forms of knot or loop may be employed,those shown in the drawings being given as illustrations, ashereinbei'ore stated, in which the interlocking of the crossing rods issecured with- The metal may out the use of bolts or rivets.

be and generally will be treated, after the several rods are securedtogether in any desirable manner, by plating or the like.

hat I claim is 1. As a new article of manufacture, a metallic fabriccomposed of a plurality of longitudinally-arranged bars or rods and aplurality of transversely-arranged rods or bars, said rods or bars beingsecurely locked at their points of intersection by looping either ofsaid rods about the other, substantially as described.

2. As a new article of manufacture, a metallic fabric composed of aplurality of interwoven rods or bars, one set of rods or bars beingslightly bended. at the points of intersection and the other set of rodsor bars being locked in position by being looped around thefirst-mentioned set of bars with the loops engaging the bends therein,substantially as described.

In testimony that I claim the foregoing as my invention I aflix mysignature in presence of two witnesses.

VILLIAM II. SVINSLOVV.

XVitnesses:

TAYLOR E. BROWN, Geo. W. HIGGINS, Jr.

